Alchemical Spellcasting (Su)

This creature can spontaneously cast spells as a 16th-level sorcerer, but uses the alchemist’s extracts per day progression (adjusted by his Charisma modifier) to determine how many spells he knows, and he can learn only spells from the alchemist spell list.

Desert Thirst (Su)

A blue dragon can cast create water at will (CL equals its HD). Alternatively, it can destroy an equal amount of liquid in a 10-foot burst. Unattended liquids are instantly reduced to sand. Liquid-based magic items (such as potions) and items in a creature’s possession must succeed on a Will save. The save DC is Charisma-based.

Electricity Aura (Su)

An adult blue dragon is surrounded by an aura of electricity. Creatures within 5 feet take 2d6 points of electricity damage at the beginning of the dragon’s turn.

Soul Ward (Su)

An intangible field of siphoned soul energy protects a ravener from destruction. This ward has a maximum number of hit points equal to twice the ravener’s Hit Dice, but starts at half this amount. Whenever a ravener would be reduced below 1 hit point, all damage in excess of that which would reduce it to 1 hit point is instead dealt to its soul ward. If this damage reduces the soul ward to fewer than 0 hit points, the ravener is destroyed.